Refraction of The Light

Things to remember

• The bending of light as it passes from one transparent medium to another medium is called refraction of light.
• Laws of refraction:

1. The incident ray, the normal and the refracted ray all lie in the same plane
2. The ray of light bends towards the normal when it passes from a rarer medium to a denser medium and away from the normal when it passes from denser medium to rarer medium.
3. If a ray of light travels normally (< i = 0), it goes straight.